PV Commissioning

• Site conducted

• Conducted on

  Date

• Prepared by

• Location
  Address

• Test instrument

String 1

• Array Module

• Array Quantity

• Array Parameters - Voc (STC)

• Array Parameters - Isc (STC)

• String overcurrent protective device - Type

• String overcurrent protective device - Rating (A)

• String overcurrent protective device - DC Rating (V)

• String overcurrent protective device - Capacity (kA)

• String Wiring - Type

• String Wiring - Phase CSA (mm2)

• String Wiring - Earth CSA (mm2)

• String Test - Voc (STC)

• String Test - Isc (STC)

• String Test - Irradiance

• Polarity Check

• Array Insulation Resistance - Test Voltage (V)

• Array Insulation Resistance - Pos - Earth (MΩ)

• Array Insulation Resistance - Neg - Earth (MΩ)

• Earth Continuity (where fitted)

• Array Isolator - Rating (A)

• Array Isolator - Rating (V)

• Array Isolator - Location

• Array Isolator - Functional Check

• Inverter - Make

• Inverter - Model

• Inverter - Serial Number

• Inverter - Functional Check

String 2

• Array - Module

• Array - Quantity

• Array Parameters - Voc (STC)

• Array Parameters - Isc (STC)

• String over-current protective device - Type

• String over-current protective device - Rating (A)

• String over-current protective device - DC Rating (V)

• String over-current protective device - Capacity (kA)

• String Wiring - Type

• String Wiring - Phase CSA (mm2)

• String Wiring - Earth CSA (mm2)

• String Test - Voc (STC)

• String Test - Isc (STC)

• String Test - Irradiance

• Polarity Check

• Array Insulation Resistance - Test Voltage (V)

• Array Insulation Resistance - Pos - Earth (MΩ)

• Array Insulation Resistance - Neg - Earth (MΩ)

• Earth Continuity (where fitted)

• Array Isolator - Rating (A)

• Array Isolator - Rating (V)

• Array Isolator - Location

• Array Isolator - Functional Check

• Inverter - Make

• Inverter - Model

• Inverter - Serial Number

• Inverter - Functional Check

• Generator’s Installation satisfies the requirements of BS7671 (IET Wiring Regulations).

  Yes

  No

• Suitable lockable points of isolation have been provided between the PGMs and the rest of the Generator’s Installation.

  Yes

  No

• Labels have been installed at all points of isolation in accordance with EREC G99.

  Yes

  No

• Interlocking that prevents PGMs being connected in parallel with the DNO’s Distribution Network (without synchronising) is in place and operates correctly.

  Yes

  No

• Balance of Multiple Single Phase PGMs. Confirm that design of the Generator’s Installation has been carried out to limit output power imbalance to below 16 A per phase, as required by EREC G99.

  Yes

  No

• Installation complies with cyber security requirements

  Yes

  No

• The Interface Protection settings have been checked and comply with EREC G99.

  Yes

  No

• The system successfully synchronises with the DNO’s Distribution Network without causing significant voltage disturbance

  Yes

  No

• The system successfully runs in parallel with the DNO’s Distribution Network without tripping and without causing significant voltage disturbances.

  Yes

  No

• The system successfully disconnects without causing a significant voltage disturbance, when it is shut down.

  Yes

  No

• Interface Protection operates and disconnects the DNO’s Distribution Network quickly (within 1 s) when a suitably rated switch, located between the PGM and the DNO’s incoming connection, is opened.

  Yes

  No

• The PGM remains disconnected for at least 20 s after switch is reclosed.

  Yes

  No

• Loss of tripping and auxiliary supplies. Where applicable, loss of supplies to tripping and protection relays results in either PGM or Generating Unit forced trip or an alarm to a 24 hour manned control centre.

  Yes

  No

• General check to confirm system complies with relevant standards.

  Yes

  No

• PV voltage suitable for location

  Yes

  No

• Components selected and erected to suit location and external influences

  Yes

  No

• Roof and building penetrations weatherproof (where applicable)

  Yes

  No

• Verification of protective measures against shock.

  Yes

  No

• Parts selected and erected so as to minimise the risk of earth faults and short circuits.

  Yes

  No

• Identification if the inverter has at least simple separation.

  Yes

  No

• Identification of any functional earthing

  Yes

  No

• Presence of earth insulation resistance detection and alarm system

  Yes

  No

• Presence of earth residual current monitoring detection and alarm system

  Yes

  No

• String cables sized appropriately for prospective fault currents

  Yes

  No

• String/array over current protective devices correctly specified and installed

  Yes

  No

• Check of any functional earth connections

  Yes

  No

• Check functional earth fault interrupters are fitted (where required)

  Yes

  No

• Check of any earthing and/or equipotential bonding

  Yes

  No

• Verify wiring loops minimised

  Yes

  No

• SPDs, where fitted, suitable selected and erected

  Yes

  No

• Measures in place to protect long cables

  Yes

  No

• All d.c. components rated for d.c. and for voltage and current maxima

  Yes

  No

• Wiring selected and erected to suit external influences (wind, UV etc.)

  Yes

  No

• String/array isolation and disconnection devices correctly specified and located

  Yes

  No

• Plug and sockets are of same type and correctly mated

  Yes

  No

• Means of isolating inverter provided on AC side

  Yes

  No

• AC Isolators correctly connected

  Yes

  No

• Inverter parameters correctly specified on AC side

  Yes

  No

• RCDs correctly selected and installed (where fitted) on AC side

  Yes

  No

• All parts correctly labelled and suitably durable

  Yes

  No

• Schematics and other signs suitably displayed

  Yes

  No

• Test to ensure the continuity of earthing and/or equipotential bonding conductors (if fitted)

  Yes

  No

• Connection to main earthing terminal verified

  Yes

  No

• Test to ensure that all strings and arrays are correctly marked and connected

  Yes

  No

• Test to ensure that all strings are correctly connected within a combiner box (if fitted)

  Yes

  No

• Test to ensure that module strings are correctly installed and that the right number of modules are connected within a string

  Yes

  No

• Test to ensure that there are no major faults within a string

  Yes

  No

• Short-circuit and operation test options presented

  Yes

  No

• Tests to ensure switchgear operated correctly

  Yes

  No

• Tests to ensure inverters operating correctly

  Yes

  No

• Test the string VOC

  Yes

  No

Evidence Requirements

• MPAN (electricity Bill)

  Media

• Existing Renewables - Manufacturer & Model and<br>Date of install

  Yes

  No

• Location of lockable isolation switch

• Panel Model & Serial Number

• How many panels installed?

• Generation meter make & model

• Battery installed?

  Yes

  No

• Battery Make, Model and Serial Number

• Fuse Board

  Media

• New system clearly shown (isolation switch etc)

  Media

• Generation Meter (working)

  Media

• Panels

  Media

• Engineer sign off

  Sign